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Measurement of the W boson polarisation in [Formula: see text] events from pp collisions at [Formula: see text] = 8 TeV in the lepton + jets channel with ATLAS.

Publication ,  Journal Article
Aaboud, M; Aad, G; Abbott, B; Abdallah, J; Abdinov, O; Abeloos, B; AbouZeid, OS; Abraham, NL; Abramowicz, H; Abreu, H; Abreu, R; Abulaiti, Y ...
Published in: The European physical journal. C, Particles and fields
January 2017

This paper presents a measurement of the polarisation of W bosons from [Formula: see text] decays, reconstructed in events with one high-[Formula: see text] lepton and at least four jets. Data from pp collisions at the LHC were collected at [Formula: see text] = 8 TeV and correspond to an integrated luminosity of 20.2 fb[Formula: see text]. The angle [Formula: see text] between the b-quark from the top quark decay and a direct W boson decay product in the W boson rest frame is sensitive to the W boson polarisation. Two different W decay products are used as polarisation analysers: the charged lepton and the down-type quark for the leptonically and hadronically decaying W boson, respectively. The most precise measurement of the W boson polarisation via the distribution of [Formula: see text] is obtained using the leptonic analyser and events in which at least two of the jets are tagged as b-quark jets. The fitted fractions of longitudinal, left- and right-handed polarisation states are [Formula: see text], [Formula: see text] and [Formula: see text], and are the most precisely measured W boson polarisation fractions to date. Limits on anomalous couplings of the Wtb vertex are set.

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Published In

The European physical journal. C, Particles and fields

DOI

EISSN

1434-6052

ISSN

1434-6044

Publication Date

January 2017

Volume

77

Issue

4

Start / End Page

264

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

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Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., … Coadou, Y. (2017). Measurement of the W boson polarisation in [Formula: see text] events from pp collisions at [Formula: see text] = 8 TeV in the lepton + jets channel with ATLAS. The European Physical Journal. C, Particles and Fields, 77(4), 264. https://doi.org/10.1140/epjc/s10052-017-4819-4
Aaboud, M., G. Aad, B. Abbott, J. Abdallah, O. Abdinov, B. Abeloos, O. S. AbouZeid, et al. “Measurement of the W boson polarisation in [Formula: see text] events from pp collisions at [Formula: see text] = 8 TeV in the lepton + jets channel with ATLAS.The European Physical Journal. C, Particles and Fields 77, no. 4 (January 2017): 264. https://doi.org/10.1140/epjc/s10052-017-4819-4.
Aaboud M, Aad G, Abbott B, Abdallah J, Abdinov O, Abeloos B, et al. Measurement of the W boson polarisation in [Formula: see text] events from pp collisions at [Formula: see text] = 8 TeV in the lepton + jets channel with ATLAS. The European physical journal C, Particles and fields. 2017 Jan;77(4):264.
Aaboud, M., et al. “Measurement of the W boson polarisation in [Formula: see text] events from pp collisions at [Formula: see text] = 8 TeV in the lepton + jets channel with ATLAS.The European Physical Journal. C, Particles and Fields, vol. 77, no. 4, Jan. 2017, p. 264. Epmc, doi:10.1140/epjc/s10052-017-4819-4.
Aaboud M, Aad G, Abbott B, Abdallah J, Abdinov O, Abeloos B, AbouZeid OS, Abraham NL, Abramowicz H, Abreu H, Abreu R, Abulaiti Y, Acharya BS, Adachi S, Adamczyk L, Adams DL, Adelman J, Adomeit S, Adye T, Affolder AA, Agatonovic-Jovin T, Aguilar-Saavedra JA, Ahlen SP, Ahmadov F, Aielli G, Akerstedt H, Åkesson TPA, Akimov AV, Alberghi GL, Albert J, Albrand S, Alconada Verzini MJ, Aleksa M, Aleksandrov IN, Alexa C, Alexander G, Alexopoulos T, Alhroob M, Ali B, Aliev M, Alimonti G, Alison J, Alkire SP, Allbrooke BMM, Allen BW, Allport PP, Aloisio A, Alonso A, Alonso F, Alpigiani C, Alshehri AA, Alstaty M, Alvarez Gonzalez B, Álvarez Piqueras D, Alviggi MG, Amadio BT, Amaral Coutinho Y, Amelung C, Amidei D, Amor Dos Santos SP, Amorim A, Amoroso S, Amundsen G, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders JK, Anderson KJ, Andreazza A, Andrei V, Angelidakis S, Angelozzi I, Angerami A, Anghinolfi F, Anisenkov AV, Anjos N, Annovi A, Antel C, Antonelli M, Antonov A, Antrim DJ, Anulli F, Aoki M, Aperio Bella L, Arabidze G, Arai Y, Araque JP, Araujo Ferraz V, Arce ATH, Arduh FA, Arguin J-F, Argyropoulos S, Arik M, Armbruster AJ, Armitage LJ, Arnaez O, Arnold H, Arratia M, Arslan O, Artamonov A, Artoni G, Artz S, Asai S, Asbah N, Ashkenazi A, Åsman B, Asquith L, Assamagan K, Astalos R, Atkinson M, Atlay NB, Augsten K, Avolio G, Axen B, Ayoub MK, Azuelos G, Baak MA, Baas AE, Baca MJ, Bachacou H, Bachas K, Backes M, Backhaus M, Bagiacchi P, Bagnaia P, Bai Y, Baines JT, Bajic M, Baker OK, Baldin EM, Balek P, Balestri T, Balli F, Balunas WK, Banas E, Banerjee S, Bannoura AAE, Barak L, Barberio EL, Barberis D, Barbero M, Barillari T, Barisits M-S, Barklow T, Barlow N, Barnes SL, Barnett BM, Barnett RM, Barnovska-Blenessy Z, Baroncelli A, Barone G, Barr AJ, Barranco Navarro L, Barreiro F, Barreiro Guimarães da Costa J, Bartoldus R, Barton AE, Bartos P, Basalaev A, Bassalat A, Bates RL, Batista SJ, Batley JR, Battaglia M, Bauce M, Bauer F, Bawa HS, Beacham JB, Beattie MD, Beau T, Beauchemin PH, Bechtle P, Beck HP, Becker K, Becker M, Beckingham M, Becot C, Beddall AJ, Beddall A, Bednyakov VA, Bedognetti M, Bee CP, Beemster LJ, Beermann TA, Begel M, Behr JK, Bell AS, Bella G, Bellagamba L, Bellerive A, Bellomo M, Belotskiy K, Beltramello O, Belyaev NL, Benary O, Benchekroun D, Bender M, Bendtz K, Benekos N, Benhammou Y, Benhar Noccioli E, Benitez J, Benjamin DP, Bensinger JR, Bentvelsen S, Beresford L, Beretta M, Berge D, Bergeaas Kuutmann E, Berger N, Beringer J, Berlendis S, Bernard NR, Bernius C, Bernlochner FU, Berry T, Berta P, Bertella C, Bertoli G, Bertolucci F, Bertram IA, Bertsche C, Bertsche D, Besjes GJ, Bessidskaia Bylund O, Bessner M, Besson N, Betancourt C, Bethani A, Bethke S, Bevan AJ, Bianchi RM, Bianco M, Biebel O, Biedermann D, Bielski R, Biesuz NV, Biglietti M, Bilbao De Mendizabal J, Billoud TRV, Bilokon H, Bindi M, Bingul A, Bini C, Biondi S, Bisanz T, Bjergaard DM, Black CW, Black JE, Black KM, Blackburn D, Blair RE, Blazek T, Bloch I, Blocker C, Blue A, Blum W, Blumenschein U, Blunier S, Bobbink GJ, Bobrovnikov VS, Bocchetta SS, Bocci A, Bock C, Boehler M, Boerner D, Bogaerts JA, Bogavac D, Bogdanchikov AG, Bohm C, Boisvert V, Bokan P, Bold T, Boldyrev AS, Bomben M, Bona M, Boonekamp M, Borisov A, Borissov G, Bortfeldt J, Bortoletto D, Bortolotto V, Bos K, Boscherini D, Bosman M, Bossio Sola JD, Boudreau J, Bouffard J, Bouhova-Thacker EV, Boumediene D, Bourdarios C, Boutle SK, Boveia A, Boyd J, Boyko IR, Bracinik J, Brandt A, Brandt G, Brandt O, Bratzler U, Brau B, Brau JE, Breaden Madden WD, Brendlinger K, Brennan AJ, Brenner L, Brenner R, Bressler S, Bristow TM, Britton D, Britzger D, Brochu FM, Brock I, Brock R, Brooijmans G, Brooks T, Brooks WK, Brosamer J, Brost E, Broughton JH, Bruckman de Renstrom PA, Bruncko D, Bruneliere R, Bruni A, Bruni G, Bruni LS, Brunt BH, Bruschi M, Bruscino N, Bryant P, Bryngemark L, Buanes T, Buat Q, Buchholz P, Buckley AG, Budagov IA, Buehrer F, Bugge MK, Bulekov O, Bullock D, Burckhart H, Burdin S, Burgard CD, Burger AM, Burghgrave B, Burka K, Burke S, Burmeister I, Burr JTP, Busato E, Büscher D, Büscher V, Bussey P, Butler JM, Buttar CM, Butterworth JM, Butti P, Buttinger W, Buzatu A, Buzykaev AR, Cabrera Urbán S, Caforio D, Cairo VM, Cakir O, Calace N, Calafiura P, Calandri A, Calderini G, Calfayan P, Callea G, Caloba LP, Calvente Lopez S, Calvet D, Calvet S, Calvet TP, Camacho Toro R, Camarda S, Camarri P, Cameron D, Caminal Armadans R, Camincher C, Campana S, Campanelli M, Camplani A, Campoverde A, Canale V, Canepa A, Cano Bret M, Cantero J, Cao T, Capeans Garrido MDM, Caprini I, Caprini M, Capua M, Carbone RM, Cardarelli R, Cardillo F, Carli I, Carli T, Carlino G, Carlson BT, Carminati L, Carney RMD, Caron S, Carquin E, Carrillo-Montoya GD, Carter JR, Carvalho J, Casadei D, Casado MP, Casolino M, Casper DW, Castaneda-Miranda E, Castelijn R, Castelli A, Castillo Gimenez V, Castro NF, Catinaccio A, Catmore JR, Cattai A, Caudron J, Cavaliere V, Cavallaro E, Cavalli D, Cavalli-Sforza M, Cavasinni V, Ceradini F, Cerda Alberich L, Cerqueira AS, Cerri A, Cerrito L, Cerutti F, Cervelli A, Cetin SA, Chafaq A, Chakraborty D, Chan SK, Chan YL, Chang P, Chapman JD, Charlton DG, Chatterjee A, Chau CC, Chavez Barajas CA, Che S, Cheatham S, Chegwidden A, Chekanov S, Chekulaev SV, Chelkov GA, Chelstowska MA, Chen C, Chen H, Chen S, Chen X, Chen Y, Cheng HC, Cheng HJ, Cheng Y, Cheplakov A, Cheremushkina E, Cherkaoui El Moursli R, Chernyatin V, Cheu E, Chevalier L, Chiarella V, Chiarelli G, Chiodini G, Chisholm AS, Chitan A, Chizhov MV, Choi K, Chomont AR, Chouridou S, Chow BKB, Christodoulou V, Chromek-Burckhart D, Chudoba J, Chuinard AJ, Chwastowski JJ, Chytka L, Ciftci AK, Cinca D, Cindro V, Cioara IA, Ciocca C, Ciocio A, Cirotto F, Citron ZH, Citterio M, Ciubancan M, Clark A, Clark BL, Clark MR, Clark PJ, Clarke RN, Clement C, Coadou Y. Measurement of the W boson polarisation in [Formula: see text] events from pp collisions at [Formula: see text] = 8 TeV in the lepton + jets channel with ATLAS. The European physical journal C, Particles and fields. 2017 Jan;77(4):264.
Journal cover image

Published In

The European physical journal. C, Particles and fields

DOI

EISSN

1434-6052

ISSN

1434-6044

Publication Date

January 2017

Volume

77

Issue

4

Start / End Page

264

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics